So if I had to do it all over again, I'd probably do something like this: 1 Bushynose Pleco 5 Corys 5 Otocinclus 5 Rama Rama (or something similar (like Chandramara chandramara or Batasio tengana or Mystus carcio) Again this is for a 29-gallon. I may eventually get a bigger tank, which of course ...

Thank you bekateen for your response. Yes, my upside-down catfish are Synodontis nigriventris. I've got 3 of them, was hoping that would be enough, perhaps not. I started out with 4 Asian Glass Catfish, again hoping that would be enough, but 2 didn't last long & now down to 2, who are doing fine but ...

Thank you FatCatDoorMat. These look like good suggestions. I need to find out more about them tho. Are Rama chandramara active during the day? Do they often inhabit the mid-to-upper levels of the tank? Obviously I'd say I don't have room for any of these now, but perhaps later down the line.

I thought it would be cool to have a catfish-only community tank. The fish are housed in a 29-gallon with live plants and sand as a substrate. External filter, air stone, heater, and a LED tank hood with blue nightlight. I've had it for a year and it seems to be doing okay. pH is on the hard side ...